Analysis of a Non-crosslinked, Water Soluble Anion Exchange Resin for the Possible Presence of Parts Per Billion Level of Bis (Chloromethyl) Ether

Tou, James C.; Westover, L. B.; Sonnabend, L. F.

doi:10.1080/00028897508984412

Cited by 10 publications

(1 citation statement)

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“…The base ion (m/e = 112) is scanned and integrated for 1.2 s with each scan integration beginning at 2.6-s intervals. The resultant signal rises after ester addition and reaches a plateau (Figure 2), The time response is then fit (the three constants unconstrained) to I = cqCl -a2e~°3t) (3) with the nonlinear least-squares algorithm GRIDLS (16). Within experimental uncertainty, the best fit values of were identical with the magnitudes of the signal plateau measured directly.…”

mentioning

confidence: 99%

Permeable membrane-mass spectrometric measurement of reaction kinetics

Calvo¹,

Weisenberger²,

Anderson³

et al. 1981

Anal. Chem.

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mentioning

confidence: 99%

Permeable membrane-mass spectrometric measurement of reaction kinetics

Calvo¹,

Weisenberger²,

Anderson³

et al. 1981

Anal. Chem.

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Direct detection of organic compounds in water at parts-per-billion levels using a simple membrane probe and a quadrupole ion trap

Lister¹,

Wood²,

Cooks³

et al. 1989

Biol. Mass Spectrom.

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Organic compounds present in aqueous solutions can be analyzed directly using a quadruple ion trap detector (ITD) when the solution is introduced via a hollow fiber membrane probe. The flow-through configuration used for sample introduction allows the aqueous solution to flow through the capillary membrane tubing while the organic compounds which selectively permeate the membrane are ionized in the ion source. In this mode of operation, the instrument shows high sensitivity. Chemical ionization mass spectra for a set of ten organic compounds of environmental interest were recorded and the ITD/membrane system was found to consistently allow detection of part-per-billion (ppb) levels of tbese compounds directly from water without any preconcentration. Analysis of well water samples containing ppb to part-per-million levels of organics was demonstrated using the ITD/membrane system. The combination of the membrane probe and ion trap produces a compact, inexpensive, rapid and sensitive system for environmental analysis. The flow-through membrane configuration was also used with a direct insertion probe in a triple quadrupole. Detection limits in the ppb range for organic compounds in water were measured. Detection of particular compounds in complex matrices was demonstrated by detection of 10 ppb 2-methoxypyridine in a fermentation medium using a triple-quadrupole mass spectrometer.

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